Location History:
- Osaka, JP (2007 - 2009)
- Sijonawate, JP (2011 - 2013)
Company Filing History:
Years Active: 2007-2013
Title: The Innovative Genius of Kotaro Sumitomo
Introduction: Kotaro Sumitomo, a notable inventor hailing from Sijonawate, Japan, has made significant contributions to the field of materials science with his inventive solutions. With a total of six patents to his name, Sumitomo has showcased his ability to innovate and enhance everyday products, particularly in the realm of art supplies.
Latest Patents: Among his latest inventions is a groundbreaking crayon that utilizes an alternative plasticizer in place of the traditional phthalate ester plasticizers. This innovative crayon not only includes a colorant, a gelling agent, an organic solvent, a resin component, and a carefully selected plasticizer, but it also ensures excellent water resistance. The plasticizer is comprised of components such as diisononyl adipate, acetyltributyl citrate, and 1,2-cyclohexanedicarboxylic acid diisononyl, present in a range of 1 to 20% by weight based on the crayon. Additionally, Sumitomo has developed a novel process for producing a crayon with stable hardness, leveraging a benzylidene sorbitol gelling agent in conjunction with carbon black for pigment, which ensures optimal gelation and prevents quality issues.
Career Highlights: Kotaro Sumitomo is currently employed at Sakura Color Products Corporation, known for its commitment to creating high-quality stationery and art materials. His work aligns with the company’s mission to innovate and deliver superior products to consumers, driving advancements in the art supply industry.
Collaborations: Throughout his career, Sumitomo has had the privilege of collaborating with talented peers, including Hidetoshi Fukuo and Masamitsu Takahashi. These partnerships have fostered a creative environment that stimulates innovation and the development of cutting-edge products that meet modern consumers' needs.
Conclusion: Kotaro Sumitomo's inventive spirit and dedication to improving art materials have led to impactful innovations in the industry. With his contributions, art enthusiasts can enjoy products that not only perform better but are also composed of safer materials. His ongoing work continues to inspire future generations of inventors and creators.